Michael Schumacher’s manager has confirmed that his condition has remained stable following the skiing accident that has left him in a medically induced coma.

Sabine Kehm released a new statement on the Formula One champion’s health, and did not mention the word “critical” for the first time since he suffered traumatic head injuries on 29 December after veering off-piste on the ski slopes of Meribel in the French Alps.

Dr Greenwood was speaking at the launch of a study published in the Journal of the American Medical Association Psychiatry, in which it found that people who had suffered a traumatic head injury were three times as likely to die prematurely as those who had not.

More than 220,000 people were tested in the extensive research.

Schumacher’s manager Sabine Kehm last issued a statement in which she confirmed that anything reported from a source away from either herself or the Schumacher family “must be treated as invalid and pure speculation”.

Speaking on 6 January, Kehm said: “I can confirm Michael's condition can be considered stable.

“I can't confirm to have stated his life is out of danger.”

Schumacher remains in a “stable but critical condition”, and no further update will be issued until doctors have seen a change on his status as he continues to fight for his life.

Tourists are limp, leaderless and distinctly UnAustralian

Andrew Grice: Inside Westminster

Blairites be warned, this could be the moment Labour turns into Syriza

The mystery of Britain's worst naval disaster is finally solved - 271 years later

Exclusive: David Keys reveals the research that finally explains why HMS Victory went down with the loss of 1,100 lives

'I saw people so injured you couldn't tell if they were dead or alive'

Nagasaki survivors on why Japan must not abandon its post-war pacifism

The voter Obama tried hardest to keep onside

Outgoing The Daily Show host, Jon Stewart, became the voice of Democrats who felt the President had failed to deliver on his ‘Yes We Can’ slogan. Tim Walker charts the ups and downs of their 10-year relationship on screen